of rochester



Nov. 2 1926. 1,605,841

J. G. JONES PHOTOGRAPHIC GARTRIDGE Filed April 2, 1924 Jab]; 67. fozzes, BY W W W- $44 13.-

.dTTORNEI ZSI INVENTOR,

Patented Nov. 2, 1926.

lihlllfil' STATES rarer JOHN G. JONES, OF ROCHESTER, NEW YORK, ASSIGNOB TO EASTMAN KODAK COMEANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

PHOTOGRAPBIIC CARTRIDGE.

Application filed April 2 1924. Serial ISl'o. 703,795.

This invention relates to photographic roll film cartridges of the type commonly used in cameras and comprising a roll of film and protective paper therefor.

More particularly this invention has for its object the elimination of the fault com- I monly known as edge fog, which results from the undesired leaking of light into the margin or border of roll film. In my Patents Nos. 1,454,812 to 1,454,817 inclusive, granted May 8, 1923, I have disclosed the use of a protective paper which is wider than the film and. which is adapted to buckle or be compressed upon itself, thus forming light looks at the ends of the spool or cartridge. I A

This application relates to modifications or improvements embodying certain of the features disclosed and claimed in the above patents, or applicable to the embodiments therein disclosed. More particularly it re lates to cartridges havingprotective paper in which greater flexibility is obtained by making the edges bevelled and with the fibers drawn or arranged transversely of the strip so that the edges will be combed or brush-like,that is having many hairlike fibers extending outwardly at the edges, which are thus rendered extremely flexible. The process and apparatus used in the making of such protective strips are disclosed and claimed in my co-pending application, No. 703,794, filed April 2, 1924.

The advantages inherent in the form disclosed in this application are similar to those described in the above mentioned patents.

It is obvious that modifications embodying the invention as defined in the appended claims are possible,.and I have described the invention as applied to a preferred form.

Referring to the figures in the accompanying drawing, the same reference characters being used to designate the same parts in the several figures,

Fig. 1 is a perspective view of a partially unwound film cartridge, the leader strip being broken away;

Fig. 2 is a fragmentary view showing on an enlarged scale the edge of a protective paper strip;

Fig. 8 is a fragmentary sectional view of one end of a film cartridge having film and protective material interwound thereon and showing the margins of the protective material flexed. In all of the figures the thick ness of the material is exaggerated in order to show more clearly the nature of the invention, and the figures are not drawn to scale.

Upon a film spool of ordinary character and comprising a wooden core A and metallic end flanges C are interwound a strip of film F and backing paper 1, to which the film is attached by the usual sticker band S. The spool has the customary winding slot E at one end. As thus far described, the cartridge is in every way similar to that in general use. The backing paper 1, however, is cut wider than the distance between the interior surfaces of the flange C, and its edges during the process of manufacture are brushed, abraded or otherwise treated, so that the margin or border is bev elled and so that the fibers at these portions are pulled or biased whereby they will lie predominantly in a direction transversely of the strip, and this is particularly evident in the fibers atthe extreme edge, practically all of which will extend out like fine hair s to form a brush-like edge, this being indicated at 2.

When the film and paper are thus interwound upon the spool, the marginal portion of the paper will buckle or flex upon itself as indicated at 3 in Fig. 3, and thus be crumpled or compressed. Because of, its thinness and flexibility, this buckling or compressing will take place with the application of only very slight force and will not cause such friction or resistance as to slow up materially the operation of winding in manufacture, nor will it cause undue resistance to the movement of the film through the camera.

Other advantages and applications of this invention will be apparent by reference to the above identified patents, and these advantages, both in manufacture and in use, are found to be especially inherent in the improved embodiment herein described.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A photographic cartridge comprising coiled strips of sensitized material and of protective paper the side margins of the protective paper strip being bevelled and the fibers of the bevelled portions being predominantly arranged transversely of the strip.

.A. photographic cartridge comprising coiled strips of sensitized material and of protective paper, the fibers along the side edges of the protective paper strip being predominantly arranged transversely of the strip whereby the side edges Will be brushlike and very flexible.

3. An article of manufacture comprising strips of sensitized -Inaterial and of protective paper interWound in a spiral coil, the strip of protective paper being Wider than the strip of sensitized material and the side margins thereof being bevelled and the fibers of the bevelled portions being predominantly arranged transversely of the strip.

4. A photographic cartridge comprising strips 0' sensitized material and of protec tive paper intervvound in a spiral coil, the strip of protective paper being wiser than the strip of sensitized material and the fibers along the side edges of the protective paper strip being predominantly arranged transversely of the strip, whereby the side edges Will be brush-like and very flexible.

. 5. An article of manufacture comprising a roll of light sensitive material, a support therefor comprising spaced end flanges, and a strip of protective paper coiled around said sensitive material, the side margins of such protective strip being bevelled and the fibers of the bevelled portions being predominantly arranged transversely of the strip, the protective strip being Wider than the distance between the flanges.

6. An article of manufacture comprising a roll of light sensitive material, a support therefor comprising spaced end flanges, and a strip of protective material coiled around said sensitive material, the fibers along the side edges of the protective material being predominantly arranged transversely of the strip whereby the side edges will be brushlike and very flexible, the protective strip being Wider than the distance between the flanges.

7. A photographic film cartridge comprising a spool With end flanges. bands of light sensitive material and of protective material interwound thereon, the side margins of said last named band being bevelled throughout its length and the fibers of the bevelled portion being predominantly arranged trans versely of the strip.

8. A photographic film cartridge comprising a spool With end flanges, bands of light sensitive material and of protective material interWound thereon, the side margins of said last named band being bevelled throughout its length and the fibers of the bevelled portion being predominantly arranged transversely of the strip, the protective strip being Wider than the distance between the flanges and than the sensitive band.

9. A photographic film cartridge comprising a spool With end flanges, bands of light sensitive material and of protective material interwound thereon, the fibers along the side edges of the protective band throughout its length being predominantly arranged transversely of the strip whereby the side edges Will be brush-like and very flexible.

10. A photographic film cartridge cornprising a spool with end flanges, bands of light sensitive material and of protective material interwound thereon, the fibers along the side edges of the protective band throughout its length being predominantly arranged transversely of the strip whereby the side edges Will be brush-like and very flexible, the protective band being Wider than the sensitive band, and than the distance between the flanges.

Signed at Rochester, New York, this 26th day of March, 1924-.

JOHN G. JONES. 

